mexHttpBinding - 将 ServiceMetadataBehavior 添加到配置文件或直接添加到 ServiceHost 以启用对此合约的支持
我知道这个问题已经被问过很多次，也被回答过很多次，但是，所有提供的应该工作的示例今天似乎并不适合我。
当我尝试启动主机时，不断收到以下错误：
“在服务 TraceService 实现的合约列表中找不到合约名称‘IMetadataExchange’。将 ServiceMetadataBehavior 添加到配置文件或直接添加到 ServiceHost 即可启用对此合同的支持。”
按照 Microsoft 的示例，我的服务托管在托管 Windows 服务主机中：http://msdn.microsoft.com/en-us/library/ms733069%28v=vs.90%29.aspx
这是我漂亮而简单的配置：
<system.serviceModel>
<services>
<service name="Daff.Lae.Service.TraceService">
<endpoint address="" binding="wsHttpBinding" name="TraceService" contract="Contracts.Service.ITraceService">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
<host>
<baseAddresses>
<add baseAddress="http://localhost:8080/TraceService" />
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="DefaultBehavior">
<serviceDebug includeExceptionDetailInFaults="true"/>
<serviceMetadata httpGetEnabled="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
当然，如果我删除此行，当没有错误时问题会变得更有趣：
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
任何帮助将非常非常非常感谢:)
I know this has been asked many times, and answered many times, but, all the provided samples that should be working don't seem to want to work for me today.
When I try to start the host, I keep getting the following error:
"The contract name 'IMetadataExchange' could not be found in the list of contracts implemented by the service TraceService. Add a ServiceMetadataBehavior to the configuration file or to the ServiceHost directly to enable support for this contract."
My service is being hosted in a managed windows service host as per Microsoft's example: http://msdn.microsoft.com/en-us/library/ms733069%28v=vs.90%29.aspx
And here is my nice and simple config:
<system.serviceModel>
<services>
<service name="Daff.Lae.Service.TraceService">
<endpoint address="" binding="wsHttpBinding" name="TraceService" contract="Contracts.Service.ITraceService">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
<host>
<baseAddresses>
<add baseAddress="http://localhost:8080/TraceService" />
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="DefaultBehavior">
<serviceDebug includeExceptionDetailInFaults="true"/>
<serviceMetadata httpGetEnabled="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
Of course, the problem becomes more interesting when there are no errors if I remove this line:
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
Any help would be very very very greatly appreciated :)
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请务必在配置的
service元素中指定behaviorConfiguration，以便允许httpGet或httpsGet。我看到您已经定义了一个名为
DefaultBehavior的 serviceBehavior - 现在您需要做的就是将behaviorConfiguration="DefaultBehavior"添加到service元素，因此该行变为：如果您没有显式指定服务的行为，则默认情况下不允许 HTTP GET 和 HTTPS GET，并且您的元数据将不会公开。
Be sure to specify a
behaviorConfigurationin theserviceelement of your configuration in order to allow eitherhttpGetorhttpsGet.I see that you have already defined a serviceBehavior named
DefaultBehavior- now all you need to do is addbehaviorConfiguration="DefaultBehavior"to theserviceelement, so that line becomes:If you don't explicitly specify a behavior for your service, both HTTP GETs and HTTPS GETs are disallowed by default, and your metadata will not be exposed.
当您使用 WS-Http 时，您将绑定到 HTTPS 协议，因此您需要使用正确的 MEX 绑定；
并将基地址更改为 https 基地址。
或者（相反）将您的 wsHttp 绑定转换为 basicHttp 绑定，事情就会开始为您工作。
As you're using WS-Http you are binding to an HTTPS protocol, so you need to use the correct MEX binding;
and change the baseaddress to a https one.
Or (the other way around) convert your wsHttp binding to a basicHttp binding and things will start working for you.